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<pre><span class="sourceLineNo">001</span><a name="line.1"></a>
<span class="sourceLineNo">002</span>/*<a name="line.2"></a>
<span class="sourceLineNo">003</span> * Copyright (C) 2014 Archie L. Cobbs. All rights reserved.<a name="line.3"></a>
<span class="sourceLineNo">004</span> *<a name="line.4"></a>
<span class="sourceLineNo">005</span> * $Id: JMapField.html 842 2015-03-07 18:20:42Z archie.cobbs $<a name="line.5"></a>
<span class="sourceLineNo">006</span> */<a name="line.6"></a>
<span class="sourceLineNo">007</span><a name="line.7"></a>
<span class="sourceLineNo">008</span>package org.jsimpledb;<a name="line.8"></a>
<span class="sourceLineNo">009</span><a name="line.9"></a>
<span class="sourceLineNo">010</span>import java.lang.reflect.Method;<a name="line.10"></a>
<span class="sourceLineNo">011</span>import java.util.Arrays;<a name="line.11"></a>
<span class="sourceLineNo">012</span>import java.util.List;<a name="line.12"></a>
<span class="sourceLineNo">013</span>import java.util.NavigableMap;<a name="line.13"></a>
<span class="sourceLineNo">014</span><a name="line.14"></a>
<span class="sourceLineNo">015</span>import org.jsimpledb.core.MapField;<a name="line.15"></a>
<span class="sourceLineNo">016</span>import org.jsimpledb.schema.MapSchemaField;<a name="line.16"></a>
<span class="sourceLineNo">017</span>import org.objectweb.asm.ClassWriter;<a name="line.17"></a>
<span class="sourceLineNo">018</span><a name="line.18"></a>
<span class="sourceLineNo">019</span>/**<a name="line.19"></a>
<span class="sourceLineNo">020</span> * Represents a map field in a {@link JClass}.<a name="line.20"></a>
<span class="sourceLineNo">021</span> */<a name="line.21"></a>
<span class="sourceLineNo">022</span>public class JMapField extends JComplexField {<a name="line.22"></a>
<span class="sourceLineNo">023</span><a name="line.23"></a>
<span class="sourceLineNo">024</span>    final JSimpleField keyField;<a name="line.24"></a>
<span class="sourceLineNo">025</span>    final JSimpleField valueField;<a name="line.25"></a>
<span class="sourceLineNo">026</span><a name="line.26"></a>
<span class="sourceLineNo">027</span>    JMapField(JSimpleDB jdb, String name, int storageId,<a name="line.27"></a>
<span class="sourceLineNo">028</span>      JSimpleField keyField, JSimpleField valueField, String description, Method getter) {<a name="line.28"></a>
<span class="sourceLineNo">029</span>        super(jdb, name, storageId, description, getter);<a name="line.29"></a>
<span class="sourceLineNo">030</span>        if (keyField == null)<a name="line.30"></a>
<span class="sourceLineNo">031</span>            throw new IllegalArgumentException("null keyField");<a name="line.31"></a>
<span class="sourceLineNo">032</span>        if (valueField == null)<a name="line.32"></a>
<span class="sourceLineNo">033</span>            throw new IllegalArgumentException("null valueField");<a name="line.33"></a>
<span class="sourceLineNo">034</span>        this.keyField = keyField;<a name="line.34"></a>
<span class="sourceLineNo">035</span>        this.valueField = valueField;<a name="line.35"></a>
<span class="sourceLineNo">036</span>    }<a name="line.36"></a>
<span class="sourceLineNo">037</span><a name="line.37"></a>
<span class="sourceLineNo">038</span>    /**<a name="line.38"></a>
<span class="sourceLineNo">039</span>     * Get the key sub-field.<a name="line.39"></a>
<span class="sourceLineNo">040</span>     *<a name="line.40"></a>
<span class="sourceLineNo">041</span>     * @return this field's key sub-field<a name="line.41"></a>
<span class="sourceLineNo">042</span>     */<a name="line.42"></a>
<span class="sourceLineNo">043</span>    public JSimpleField getKeyField() {<a name="line.43"></a>
<span class="sourceLineNo">044</span>        return this.keyField;<a name="line.44"></a>
<span class="sourceLineNo">045</span>    }<a name="line.45"></a>
<span class="sourceLineNo">046</span><a name="line.46"></a>
<span class="sourceLineNo">047</span>    /**<a name="line.47"></a>
<span class="sourceLineNo">048</span>     * Get the value sub-field.<a name="line.48"></a>
<span class="sourceLineNo">049</span>     *<a name="line.49"></a>
<span class="sourceLineNo">050</span>     * @return this field's value sub-field<a name="line.50"></a>
<span class="sourceLineNo">051</span>     */<a name="line.51"></a>
<span class="sourceLineNo">052</span>    public JSimpleField getValueField() {<a name="line.52"></a>
<span class="sourceLineNo">053</span>        return this.valueField;<a name="line.53"></a>
<span class="sourceLineNo">054</span>    }<a name="line.54"></a>
<span class="sourceLineNo">055</span><a name="line.55"></a>
<span class="sourceLineNo">056</span>    @Override<a name="line.56"></a>
<span class="sourceLineNo">057</span>    public NavigableMap&lt;?, ?&gt; getValue(JObject jobj) {<a name="line.57"></a>
<span class="sourceLineNo">058</span>        if (jobj == null)<a name="line.58"></a>
<span class="sourceLineNo">059</span>            throw new IllegalArgumentException("null jobj");<a name="line.59"></a>
<span class="sourceLineNo">060</span>        return jobj.getTransaction().readMapField(jobj, this.storageId, false);<a name="line.60"></a>
<span class="sourceLineNo">061</span>    }<a name="line.61"></a>
<span class="sourceLineNo">062</span><a name="line.62"></a>
<span class="sourceLineNo">063</span>    @Override<a name="line.63"></a>
<span class="sourceLineNo">064</span>    public &lt;R&gt; R visit(JFieldSwitch&lt;R&gt; target) {<a name="line.64"></a>
<span class="sourceLineNo">065</span>        return target.caseJMapField(this);<a name="line.65"></a>
<span class="sourceLineNo">066</span>    }<a name="line.66"></a>
<span class="sourceLineNo">067</span><a name="line.67"></a>
<span class="sourceLineNo">068</span>    @Override<a name="line.68"></a>
<span class="sourceLineNo">069</span>    public List&lt;JSimpleField&gt; getSubFields() {<a name="line.69"></a>
<span class="sourceLineNo">070</span>        return Arrays.asList(this.keyField, this.valueField);<a name="line.70"></a>
<span class="sourceLineNo">071</span>    }<a name="line.71"></a>
<span class="sourceLineNo">072</span><a name="line.72"></a>
<span class="sourceLineNo">073</span>    @Override<a name="line.73"></a>
<span class="sourceLineNo">074</span>    public JSimpleField getSubField(String name) {<a name="line.74"></a>
<span class="sourceLineNo">075</span>        if (MapField.KEY_FIELD_NAME.equals(name))<a name="line.75"></a>
<span class="sourceLineNo">076</span>            return this.keyField;<a name="line.76"></a>
<span class="sourceLineNo">077</span>        if (MapField.VALUE_FIELD_NAME.equals(name))<a name="line.77"></a>
<span class="sourceLineNo">078</span>            return this.valueField;<a name="line.78"></a>
<span class="sourceLineNo">079</span>        throw new IllegalArgumentException("unknown sub-field `" + name<a name="line.79"></a>
<span class="sourceLineNo">080</span>          + "' (did you mean `" + MapField.KEY_FIELD_NAME + "' or `" + MapField.VALUE_FIELD_NAME + "' instead?)");<a name="line.80"></a>
<span class="sourceLineNo">081</span>    }<a name="line.81"></a>
<span class="sourceLineNo">082</span><a name="line.82"></a>
<span class="sourceLineNo">083</span>    @Override<a name="line.83"></a>
<span class="sourceLineNo">084</span>    String getSubFieldName(JSimpleField subField) {<a name="line.84"></a>
<span class="sourceLineNo">085</span>        if (subField == this.keyField)<a name="line.85"></a>
<span class="sourceLineNo">086</span>            return MapField.KEY_FIELD_NAME;<a name="line.86"></a>
<span class="sourceLineNo">087</span>        if (subField == this.valueField)<a name="line.87"></a>
<span class="sourceLineNo">088</span>            return MapField.VALUE_FIELD_NAME;<a name="line.88"></a>
<span class="sourceLineNo">089</span>        throw new IllegalArgumentException("unknown sub-field");<a name="line.89"></a>
<span class="sourceLineNo">090</span>    }<a name="line.90"></a>
<span class="sourceLineNo">091</span><a name="line.91"></a>
<span class="sourceLineNo">092</span>    @Override<a name="line.92"></a>
<span class="sourceLineNo">093</span>    MapSchemaField toSchemaItem(JSimpleDB jdb) {<a name="line.93"></a>
<span class="sourceLineNo">094</span>        final MapSchemaField schemaField = new MapSchemaField();<a name="line.94"></a>
<span class="sourceLineNo">095</span>        super.initialize(jdb, schemaField);<a name="line.95"></a>
<span class="sourceLineNo">096</span>        schemaField.setKeyField(this.keyField.toSchemaItem(jdb));<a name="line.96"></a>
<span class="sourceLineNo">097</span>        schemaField.setValueField(this.valueField.toSchemaItem(jdb));<a name="line.97"></a>
<span class="sourceLineNo">098</span>        return schemaField;<a name="line.98"></a>
<span class="sourceLineNo">099</span>    }<a name="line.99"></a>
<span class="sourceLineNo">100</span><a name="line.100"></a>
<span class="sourceLineNo">101</span>    @Override<a name="line.101"></a>
<span class="sourceLineNo">102</span>    void outputMethods(ClassGenerator&lt;?&gt; generator, ClassWriter cw) {<a name="line.102"></a>
<span class="sourceLineNo">103</span>        this.outputReadMethod(generator, cw, ClassGenerator.READ_MAP_FIELD_METHOD);<a name="line.103"></a>
<span class="sourceLineNo">104</span>    }<a name="line.104"></a>
<span class="sourceLineNo">105</span><a name="line.105"></a>
<span class="sourceLineNo">106</span>    @Override<a name="line.106"></a>
<span class="sourceLineNo">107</span>    JMapFieldInfo toJFieldInfo() {<a name="line.107"></a>
<span class="sourceLineNo">108</span>        return new JMapFieldInfo(this);<a name="line.108"></a>
<span class="sourceLineNo">109</span>    }<a name="line.109"></a>
<span class="sourceLineNo">110</span>}<a name="line.110"></a>
<span class="sourceLineNo">111</span><a name="line.111"></a>




























































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